Fix stale vlayer signals and index types

`LogisticFilter.signal` became `value` in 2.0, so the clear loop broke
on the first slot and outdated signals were left behind.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

exp_scenario/module/commands/roles.lua

@@ -42,7 +42,7 @@ Commands.new("get-roles", { "exp-commands_roles.description-get" })
         --- @cast other_player LuaPlayer?
         local roles = get_roles_ordered()
         local roles_formatted = { "" } --- @type LocalisedString
-        local response = { "exp-commands_roles.list-roles", roles_formatted }
+        local response = { "exp-commands_roles.list-roles", roles_formatted } --[[@as LocalisedString]]
         if other_player then
             roles = get_player_roles(other_player)
             response[1] = "exp-commands_roles.list-player"

exp_scenario/module/control/discord_alerts.lua

@@ -31,7 +31,7 @@ local function append_playtime(player_name)
 end
 
 --- Get the player name from an event
---- @param event { player_index: number, by_player_name: string? }
+--- @param event { player_index: uint, by_player_name: string? }
 --- @return string, string
 local function get_player_name(event)
     local player = game.players[event.player_index]

exp_scenario/module/gui/production_stats.lua

@@ -9,6 +9,7 @@ local Roles = require("modules/exp_legacy/expcore/roles")
 local Elements = {}
 
 --- The flow precision values in the same order as production_precision_dropdown.items
+--- @type defines.flow_precision_index[]
 local precision_indexes = {
     defines.flow_precision_index.five_seconds,
     defines.flow_precision_index.one_minute,